Dell H955N User Manual page 25

CAUTION:
To ensure the UPS stops supplying power to the load during any mode of operation, the input
power must be disconnected from the UPS when the emergency power-off function is activated.
NOTE:
For Europe, the emergency switch requirements are detailed in Harmonized document HD-384-48 S1,
"Electrical Installation of the Buildings, Part 4: Protection for Safety, Chapter 46: Isolation and Switching."
Wire Function
REPO
NOTE:
The pins must be open to keep the UPS running. If the UPS shuts down because the REPO connector
pins are shorted, restart the UPS by re-opening the REPO connector pins and turning on the UPS manually.
Maximum resistance in the shorted loop is 10 ohm.
NOTE:
Always test the REPO function before applying your critical load to avoid accidental load loss.
Remove Jumper if
Figure 16. REPO Connector
To install the REPO switch:
1
Verify that the UPS is off and disconnected from utility power.
2
Remove the REPO connector from the accessory kit.
NOTE:
Verify that there is no jumper installed in the REPO connector. If a jumper is installed, remove it before
connecting to the REPO port. See Figure 16.
3
Connect the REPO connector to the REPO port labeled "IN" on the UPS rear panel.
REPO Connections
Terminal Wire Size Rating
2
4–0.32 mm (12–22 AWG)
Installed
Suggested Wire Size
2
0.82 mm (18 AWG)
Installation
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